, an excellent airline, has released a '$300 off' promo code, valid for travel from Canada to New Zealand, Australia, and the Cook Islands.

The promo code is 75TH300

Sales Period :

31 March - 2 April, 2015

Valid for travel:

Commencing between 2 April and 30 November, 2015.

When to go?

The ideal months to visit the Cook Islands are August, September, and October.

Of course, Air New Zealand knows this, and that's why they don't appear to have any date combinations in those months for $788, from what I can see. The prices are cheaper than usual, but they're in the $800s and $900s.

The closest month with $788 roundtrip fares appears to be in June. The weather is fine in the Cook Islands in June, as their rainy season has ended. The average high in June is 25C.

Here are the $788 date combinations...

May 31 - June 13June 7- 20June 14 - 20June 21-27

Basically, it appears to be any date combination in June where you depart on a Sunday and return on a Saturday.